Explosive-engine.



PA'TBNTED SEPT. 15, 1903.

W. J. WRGHT. EXPLOSIVB ENGINE. APPLIGATION FILED sB. 21, 1902.

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No. 739,050. PATENTEDSEPT. 15, 1903.

W. J. WRIGHT. I

EXPLOSVE ENGINE.

, APPLICATION FILED H1B. 21, 1902. No MODEL. 2 SHEETS-SHEET 2.

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UNITED STATES Patented september 15, 190s. A.

PATENT OEEICE.

WILLIAM J. WRIGHT, OF PITTSBURG, PENNSYLVANIA, ASSIGNORA OF THREE-SIXTEENTHS TO J. W. LEE AND FRED J. GALLOWAY, OF

PITTSBURG, PENNSYLVANIA.

EXPLOSIVE-ENGINE.

SPECIFICATION forming pari-fof Letters Patent No. 739,050, dated September 15, 1903. Application iiled February 2l, 1902. Serial No. 95,097. (No model.)

' To @ZZ whoml it may concern:

Be it knownthat I, WILLIAM J. WEIGHT, of Pittsburg, in the county of Allegheny and kState of Pennsylvania, have invented certain new and useful Improvements in Explosive- Engines, of which the following is a specification.

.My present invention seeks to provide a new construction of explosive-en gine in which the several parts have. a special cooperative arrangement, whereby the expansive force of the burned mixture'can be utilized for aiding in running the machine, and the use of pu mpcylinders coupled with the explosive-cylinder is dispensed with; and the said invention also seeks to provide a simple and effective means for creating a vacuum for drawing oft the burned mixture after its expansive force is utilized and for drawing a new charge into the explosion-chamber. V

' With other objects inview,which will here- Y inafter be explained, my invention consists in the peculiar combination and novel correlation of parts, all of which will hereinafter be fully explained and particularly pointed out in the appended claims, reference being had to the accompanying'drawings, in which- Figure lis a vertical longitudinal sectionY -of the pump-cylinder, the explosion or working cylinder, and the compound operatingcylinder, with the several valve and feed connections, hereinafter specially referred to,the crank-shaft and valve-gear devices being also shown. Fig. 2 is a horizontal section vtaken practically on the line 2 2 of Fig. l. Fig. 3 is a diagram illustrating the correlative arrangement of the pump,th e Working and compound cylinders, their pistons, and the connections for joining said pistons with the crank disk and shaft. Fig. 4 is a detail sectional View illustrating a governor mechanism for controlling the working-agent feed to the working cylinder.

In the accompanying drawings I have illustrated a mechanism embodying myinvention; but I desire it understood the detailed ai'- rangement ofY the several parts may be modied or varied to suit the particular character of work for which it may be desired to utilize my improved type of engine.

In the practical application of my invention I employ a working (explosive) cylinder A, mounted upon a suitable bed or frame B, having the usual slideway for the cross-head O, with which the rod D of the Working piston connects and which in turn connects with the crank memberor Wrist-pin E of the crank-shaft E, mounted on the bed or frame B and provided with a band-pulley and balance-wheel in lthe usual manner.

In my present construction the cross-head joins with the crank or wrist-pin E' by adouble bell-crank lever F, the two short arms f' f2 of which project in opposite directions and the long arm f3 forwardly to engage-the crank or Wrist-pin E', as clearly shown in Fig. 1, by

reference to which it-will also be noticed the' said lever F is fulcrumed on the cross-head by the pin f5, that lies in a horizontal plane with the crank-shaft and the axis ofthe working piston. The' purpose of the two oppositely-extended members fj2 Will be hereinafter explained.

The Working cylinder A has valved intakes a 0,', one at each end, and centrally it has two adjacent exhausts b b', as clearlyv shown in Fig. l.

G designates a Working-agent-feed pipe that communicates through the laterally-extending conveyer or pipe members g g with the valved intakes a a to the cylinder A, and to provide for an 'economical and uniform feed of the working agent a governor mechanism, (indicated by H) geared with and controlled by crank-shaft E, is employed. As any ordinary type of governor mechanism can be utilized for cooperating with my present type of engine and as the governor mechanism'per se forms no part of my present invention, a detailed description of said governor mechanism is deemed unnecessary. The

intakes c 0.' have valves 0.2 a3, adapted to located under the working cylinder, and the said cylinder J has an intake at each end,

ICO

(designated by 7'j,) each regulated by a mecbanically-controlled valvejX,-normally held closed by a spring or equivalent means and adapted to be opened at predetermined times by the cams 7c 7c on a shaft K, geared with and controlled by the movement ofthe crankshaft. The intakes jj of the cylinder J are connected with the exhausts b b' of the working cylinder, the pipesj, connecting the said exhausts b' b with the intakes j .7", having a crossed relation, so the exhaust b' joins with the intake]l and the exhaust b with the intake j to provide fora proper uniform movement of the several operating-pistons, presently again referred to. The cylinder J is also provided at each end with an outlet y, also normally closed by a valvejs, arranged to be mechanically opened at predetermined times by the cams l? Z3 on shaft L, also geared with the crank-shaft, the intake and outlet controlling valve operatingmeehanisms for the cylinder J having such correlative action that the intake and outlet at one end of the cylinder will at times be opened in unison as the intake and outlet at the other end of said cylinder remain closed, and vice versa.

M designates a condensing-coil that connects with the outlets fj ot' the cylinder J, and the said coil for effecting a quick cooling and condensing of the residuum drawn from the cylinder J in the manner presently explained is held in a cooling-vat N, and its discharge end extends up and connects with the pump-cylinder O, (see Fig. 1,) which operates to draw ot all of the condensations of burned charges and also to create a vacuum for effecting a recharge of the working cylinder, as will presently more fully appeal'.

J5 designates the piston for the compound cylinder, the rod of which connects with the armf2 of the crank and cross-head engaged member F, and O5 designates the pump-piston, the rod o5 of which connects with the other arm,f, and to steady the movement of the two piston-rods they are slidable in brackets P P, made fast to and projected in opposite directions from the cross-head.

The working or explosive cylinder has iguiting-tubes R and S of the usual construction and arrangement, or, if desired, electric igniting means may be combined therewith in a manner well understood to those skilled in the art to which my present invention relates.

The manner in which my improved engine operates is best explained as follows, the several parts being in the position shown in Fig. l and assuming the working piston to have been traveling in the direction indicated by the arrow z under the explosive force: Just as the working piston R reaches the position shown in Fig. l and uncovers the port bthe cam 7s will open the valve for the intakey and allow the exploded mixture to pass out from the working cylinder through the port b and jinto the left-hand end of the cylinder J, it being understood that at this time the intake a' is closed, as is also the valved portj, it being further understood that the burnt mixture which passes from the working cylinder to the cylinder J has not been completely eX- panded at this time, and therefore will cause the piston in the cylinder J to move forward a short distance in the direction of the arrow y, and thereby overcome the dead-center. During this slight movement of the piston it will be understood that the working piston remains practically at rest and does not yet cover the port b. As soon as the piston in the cylinder J has moved slightly forward in the direction of the arrow y the cam Z2 will open the pol-tj5 and allow the pump O to withdraw the burnt mixture in the working cylinder and the cylinder J through the port b', intake j, and port ji, and at the same time as the burnt mixture is being withdrawn the new charge is drawn into the working cylinder through the valved intake ct, and by the time the new charge has entered the working cylinder the working piston will have re-covered the port b', after which the valves for the intakej and portj5 will close, it being understood that by the time the valves justl mentioned close the piston in the cylinder J will have nearly completed its stroke in the direction of the arrow y. The valved intake j and the portj5 are closed shortly before the piston in the cylinder J reaches the limit of its stroke in the direction of the arrow y, which will cause a partial vacuum to be formed in the left-hand end of the cylinder J. As soon as the piston reaches the limit of its stroke in the direction of the arrow y the same series of operations will be repeated as the piston starts again in the direction ofthe arrow a.

By referring to Fig. l it will be seen that the working piston, the piston for the cylinder J, and the pump-piston have a dierential movement in relation to each other.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, isl 1. An explosive-engine comprising a working cylinder 'and piston, a valved workingagent feed for both ends of the cylinder, auto matieally-operated at predetermined times, a supplemental cylinder and piston, the latter being coupled with the working piston, the said second cylinder having inlets at each end communicating with the working cylinder, mechanicallyoperated .valves for said inlets, the second cylinder having outlets, a mechanically-operated valve for said outlets, and a pump joined with the outlets of the second cylinder, for the purposes specified.

2. In an explosive-'engine as described; a working cylinder and piston, valved intakes at each end of said working cylinder, ceutrally-arranged exhausts for said Working cylinder, a second cylinder and piston disposed below said working cylinder, said second piston being coperatively joined with ICO lIO

the saidworking piston, valved intakes at' each end of said working piston having consecond cylinder, and piston therefor, said sec-Y ond cylinder having an intake at each end,

each intake having a mechanically-con trolled valve, the said intakes having a crossed connection with the exhausts of the working cylinder, and the said second cylinder also having a mechanically-shifted valve-controlled oiftake at each end, and a pump connected with the said oft'takes, substantially as shown and for the purposes described.

4. An explosive-engine, comprising a working cylinder and a piston, automatically-operated means for feeding the working agent alternately into the opposite ends of the Working cylinder, the said cylinder having a pair of piston-controlled exhausts, a second cylinder and piston connected with the working cylinder and piston, the exhausts of the latter discharging through mechanically-coutrolled inlets, one on each end of the second cylinder, the exhaust of one endof the working cylinder being joined to the opposite end of the second cylinder, the exhaust of the other end of the working cylinder joining with the other end of the secondcylinder, and means for first drawing od the exploded charge from the working cylinder, and leading it back 0f the piston in the second cylinder, and then creating a vacuum at the rear of the two pistons and' drawing in a new charge into the working cylinder, as set forth.

5. In an engine as described, a Working cylinder and piston, a supplemental cylinder and piston, a crank-shaft, a cross-head connected with the Working piston, a double crank-lever pivoted on the cross-head, the second cylinder-piston, having its rod pivot-y ally connected to one arm of the bell-crank lever, a'pump having its piston-"rod connected to the opposite arm of the said bell-crank lever, means for automatically feeding a Working charge alternately into the opposite ends `of the workingcylinder, and means, for leading the exploded charge from the Aworking cylinder into the second cylinder back of its piston at .predetermined times, an oft'take in each end of the second cylinder for communicatingpwith the pump, and mechanicallyoperated valves for the said latter offtakes, for the purposes specified.

6. In an engine as described, a working cylinder-piston, a supplemental cylinder and piston connected with the' working cylinder and piston,and adapted to operate in harmony' therewith, automatically-operated means for controlling the fuel-feed toY the working cylinder,a means for leading the exploded charge from the working cylinder into the second cylinder at predetermined times, a pump having a suction-pipe, provided with valved laterals, one foreach end of the second cylinder, and a .condenser through which fthe said suction pipe passes, for the purposes specified.

7. The combination with the cylinder A, having valved intakes a a', one at each end, and centrally-disposed exhausts b b', the piston'Rthe cross-head C, connected with the piston R, the cylinder J, having inlets j j', and outlets js jG, mechanically controlled for each of the said inlets and outlets, the crosspipes j3 for joining ,the exhausts b b and the inlets jj', the piston in cylinder J, the pum'p O, andthe piston O5 therefor, the condenser M, the offtake-pipe that joins the pump and the offtakes from the cylinder J, said pipebeing held to pass through the condenser, the crank-shaft, the lever F, connected to the crank-disk and pivotally joined to the crosshead, said lever having oppositely-extending arms f' f2, one of which f' pivotally joins with the.,pumppiston, and the other f? pivotally connects with the pistonfof cylinder J, all being arranged substantially as shown and described.

' WILLIAM J. WRIGHT.

Witnesses:

JOHN L. FLETCHER, A. E. DIETERICH. 

